Found this great tool which allows us to mount ISO images as Virtual CD's. This saves us time and cost of buying CD's or DVD's. The tool is called as Virtual CD Control Panel. This tool allows you to mount any ISO image onto a virtual CD drive. The steps to install and configure this tool are included in the readme.txt file that comes with the download. You can download it from here:
How good is that?? No need to buy a CD/DVD. Just mount the tool whenever you need to run the install.